I got my humidor off ebay and it is great. I'd suggest you buy some beads from http://www.heartfeltindustries.com

Get the 65% humidity beads. Also, move your humidor to the lowest level of your house and keep it away from sunlight.

Finally, search the forum with keywords like "Humidity Problems" and stuff like that and you'll probably find the answers in those search results.

BTW, Welcome to the board!